Shaft-coupling.



'0. T. sPuRGEoN.,

vSHAFT GOUPLING.

APPLICATION FILED APB.. 23,1912.

1,058,482. PanenneaApr. 8, 1913.

i CHARLES T. SPURGEON, 0F HOMOSASSA, FLORIDA.

SHAFT-COUPLING. i

Specification of Letters Patent PatentedApr.-8,1913.

Applicationiled April 23, 1912. Serial N o. 692,566. i

To all whom t may concern Be it known kthat I, CHARLES T. SrURGEoN, a citizen of the United States, residing at Homosassa, in the county of Citrus and -State of 'Flo-fida, have invented new and useful Improvements in Shaf'tCouplers, ofy

which the following is a specification.

This invention relates to shaft couplers and one of the principal objects of the invention is to provide a device of this character in which the shaft clamping sleeve so as to prevent relative longitudinal movement between the shaft and the coupling member.

The particular type of coupling' illusrated herein is especially adapted for driving shafts of hydro-carbon engines used on motor boats and the like.

Another object of the invention is the provision of a slmple and eliicient device of this character in which the shaft and coupling may have their relative longitudinal positions adjusted so that in case one section of t-he shaft is too short to enter the coupling member fully,.it may be entered into the coupling member a shortl and locked in such position.

Further objects of this invention will ap' pear as the following specific descriptionis read in connection with drawing which forms a part of this application, and -in Whichr igure l is a side elevation showing one of the shafts partially entered into the co-upling member 'and the opposite shaft fully entered in a lcoupling member with the clamping sleeve on that side of the shaft in which the coupling member is fully entered 4 partially unscrewed frpmv the coupling Fig. 2 is a longitudinal section. Fig. 3 is a transverse section on the line 3.-3 of Fig.

Referring more particularly to the drawing, l represents a tubularcoupling member which is provided with oppositely extending tapered and externally threaded nipples 2 each slotted throughout its length,

as shown' at 3, to receive the raised and tapered keys 4 which are' carried by the shaft ends 5 and are threaded upon their u per surface to correspond with the threads o the nipples 2. The clamping sleeves are M Copies of this patent may be obtained for ve cents each, by addressing the is .positively locked. against rotation with relation to the cou- I I pling member and is interlocked with the member,"this is distance` the accompanying shown at 6 and are internally threaded and tapered to lit overv the nipples, as shown, so as to clamp the nipples upon the shafts, said nipples having sufficient resiliency to permit this action. If sufficient resiliency is not found to be present by slotting the nipples for the reception of the keys, an additional lslot may be made on the opposite side of the nipples, as will be readily vunderstood. When the clamping sleeves are tightened up .on'` the nipples, it

with the sleeves, which being threaded the nipples, makes the shafts interlock with the nipples against relative rotary or longitudinal movement. -While it is preferable thatthe shafts extend into the nipples suliciently for the keys to abut the coupling no-t necessary and the connection may be made when either one of the shafts are in the position shown in Fig. l or when they are only partially entered into the nipples. f In securing the inwardly tapered clamping sleeves up on the externally tapered nipples, the .saidnipples are drawn tightly into engagementl ,withV the `shaft and thereby a longitudinal movement even if the threads clamp the same against on the keys `were entirely disengaged from the threads in the clamping sleeve. What isl claimed is Y `l. In combination, a pairof shafts having integral raised threaded keys thereon, a tubular coupling member having exter- Inally threaded nipples slotted, to receive said. keys, and collars to engage the threads of thenipple and the keys. A

2. In combination, a pair or shafts, integral raised and threaded keys tapered from one end to the other, a tubular coupling member having a .straight bore to receive the .shaft, and externally taperedl and threaded nipples slotted to receive said keys, and internally tapered collars threaded upon the nipplesandhaving the threads thereof engaged with the threads of the keys, said collars adapted to clamp vthe nipples upon .the shaft.'

In testimony whereof I affix my slgnatnre in presence of two witnesses.

HARLES T. SPURGEON. Witnesses:

I. H. Hui/funnier, J. F. SrUncnoN.

"Commissioner of Patenti,

keys are interloekedupon 

